ASTROSAT CZTI

Data Quality Report

Orbit 17630

Creation date: 2024-06-27T17:38:51.930307
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_071T01_9000002610_17630cztM0_level2.evt modeM0/AS1T03_071T01_9000002610_17630cztM0_level2_quad_clean.evt
Size (bytes)526,921,92096,134,400
Size502.5 MB 91.7 MB
Events in quadrant A3,570,868635,032
Events in quadrant B3,245,031640,276
Events in quadrant C3,740,656604,766
Events in quadrant D4,975,458592,560

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143192
B0132502
C0148672
D0189512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62861492.370347%
B6286721.145402%
C6286921.463570%
D62851021.622912%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7581 6287 61 61 0.80% 0.97%
B 7581 6286 1 1 0.01% 0.02%
C 7581 6287 0 0 0.00% 0.00%
D 7580 6286 39 39 0.51% 0.62%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 237 403458 2469.16 825 810 163.1
A 0 226 7478 40.89 825 810 163.1
A 12 194 6071 32.26 825 810 163.1
B 0 230 37180 237.16 812 795 153.4
B 12 111 17644 109.82 812 795 153.4
B 4 80 16261 100.81 812 795 153.4
C 3 233 524887 2949.6 773 778 177.7
C 14 238 122790 686.66 773 778 177.7
C 8 208 63438 352.64 773 778 177.7
D 12 144 1236953 6420.56 791 770 192.5
D 1 52 565840 2934.9 791 770 192.5
D 13 189 91084 469.08 791 770 192.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter